Method of obtaining limy (calcified) or pyritized fossils from limy rocks

摘要

method for obtaining vu00e1pnitu00fdch (kalcifikovanu00fdch) and pyritizovanu00fdch fossils from zpevnenu00fdch vu00e1pnitu00fdch rocks is based on the different rates rozpouu0161tenu00ed makrokrystalicku00e9ho and microcrystalline calcite in38% kyseline sulphuric acid and consists of the following steps: - preparation sample for etching comprising drying the fossils and the surrounding rock; - ponorenu00ed dry sample in a container with sulphuric acidwhich is covered with a lid; a sample in the bath shall be for a period of 1 minute and 48 hours; extract sample of lu00e1zne and its washing under the current tepid water; - ponorenu00ed sample to neutralizacnu00ed lu00e1zne for a period of 1 to12 hours; - removal and drying the sample. device for obtaining vu00e1pnitu00fdch fossils from vu00e1pnitu00fdch rock consists of a container with sulphuric acid, suu0161icky or known suu0161u00edcu00edho device and cistu00edcu00edho device.